Oil recovery from tank bottom sludge using rhamnolipids

被引：58
|
作者：
Liu, Chuhan [1 ]
Zhang, Yin [1 ]
Sun, Shanshan [1 ]
Huang, Lixin [2 ]
Yu, Li [2 ]
Liu, Xiaonan [1 ]
Lai, Ruiqiu [1 ]
Luo, Yijing [1 ]
Zhang, Zhiyong [1 ]
Zhang, Zhongzhi [1 ]
机构：
[1] China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
[2] China Natl Petr Corp, Res Inst Petr Exploitat & Dev, Langfang 065006, Peoples R China
来源：
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING | 2018年 / 170卷
基金：
中国国家自然科学基金;
关键词：
Oil sludge; Oil recovery; Pseudomonas aeruginosa; Biosurfactant; CRUDE-OIL; CONTAMINATED SOIL; PETROLEUM; DEMULSIFICATION; BIOSURFACTANTS; PSEUDOMONAS; PYROLYSIS; EMULSIONS;
D O I：
10.1016/j.petrol.2018.06.031
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Oil sludge has become a major impediment to the development of the petroleum and petrochemical industries with the growth of oil production worldwide. In this research, rhamnolipid biosurfactant produced by Pseudomonas aeruginosa was used to recover oil from oil tank bottom sludge. The optimum value of the fermentation broth (with rhamnolipid biosurfactant concentration of 5.4 g/L) addition was a volume fraction of 2% (v/v). Optimal temperature (65 degrees C), liquid/solid ratio (3:1), washing time (3 h), and agitation intensity (300 rpm) for oil recovery were determined. Wastewater from oil recovery was flocculated with 400 mg/L polyaluminum chloride for reuse. The moisture of the recovered oil was (0.42 +/- 0.12) %, which could directly enter into the refinery process. The solid particles in the oil sludge exhibited a porous structure that adsorbed a significant amount of oil and increased the difficulty of oil recovery. Results showed that the fermentation broth of P. aeruginosa can be used to recover oil from oil sludge and has potential industrial applications.
引用
收藏
页码：14 / 20
页数：7
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